30481855 has 8 divisors (see below), whose sum is σ = 36630864. Its totient is φ = 24350400.

The previous prime is 30481853. The next prime is 30481859. The reversal of 30481855 is 55818403.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 30481855 - 2¹ = 30481853 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30481855.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30481853) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 201 + ... + 7810.

It is an arithmetic number, because the mean of its divisors is an integer number (4578858).

Almost surely, 2^30481855 is an apocalyptic number.

30481855 is a deficient number, since it is larger than the sum of its proper divisors (6149009).

30481855 is an equidigital number, since it uses as much as digits as its factorization.

30481855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8777.

The product of its (nonzero) digits is 19200, while the sum is 34.

The square root of 30481855 is about 5521.0374930804. The cubic root of 30481855 is about 312.3780174577.

The spelling of 30481855 in words is "thirty million, four hundred eighty-one thousand, eight hundred fifty-five".